How would I make this a script?

I'd like to make a script for my Ro-Company. Its a hotel line. In order to purchase or rent a room I'd like to make it so that you click a company or some kind of part then a screen gui appears and you click the type of room you'd like and you the time you'd like to have it. You'd buy it with tix and the gui will give you a tool called room key and tell you your room number and floor also give you the option to choose you else gets a room key. The actual rooms will be only for users with the specific key. After the allotted time a new GUI will appear asking if you'd like to extend or not.

PM me if you have any other questions (Garthens) ROBLOX

Do you know the basics of scripting and how to insert tools into backpacks and the use of GUIs? If not check out. You may need to use HttpService for this, which would be the easiest option for the extended time and the players. HttpService is not my strong point, so you would have to check out the wiki. You must learn yourself how to make your script as if we help, you would not be learning.